Title text:
We're building on our earlier success getting web developers to pay to change the backslashes in our displayed payment URL to forward slashes.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3113/
Usually they pay graphic designers to extort others.
Often by extorting those graphic designers, too. Pay a little and offer "exposure" (or find a way to blatantly rip off other designers). Anything to mitigate that bottom line.
Addendum: you can die from exposure.